.div3 {
  border: 5px dashed #b3ffff;
  padding: 8px;
  border-radius: 24px;
  display: flex;
  justify-content: space-between;
}

.div1 {
  background-color: red;
  margin-bottom: 8px;
  height: 50px;
}
.div2 {
  height: 100px;
  background-color: #b3ffff;
}

.div4 {
  background-color: blueviolet;
  height: 150px;
  margin-top: 8px;
}
